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Questions for those who know electromagnetism better than I do
Slartibartfast:
--- Quote from: snarkysparky on February 05, 2022, 03:51:18 pm ---still waiting for someone to explain to me how a constant E and constant B field at a point in space can imply that any energy is flowing *through* that point.
--- End quote ---
Not sure what you're asking for.
Are you saying that you understand how a time-varying E field and time-varying B field implies energy flow? If so, what is the difficulty of doing the limit of f->0 ?
If you're after a microphysical explanation, then the first thing to realise is that E and B really are just incarnations of one field, called the electromagnetic field. With energy present, this field can have displacements of various structure. Some can propagate, you call them real photons, or radiation, others cannot (but still can hand over energy locally) which are called virtual photons, which make up static fields. Some such field configurations look like separate E and B fields, those that carry energy show up as such E and B which are not collinear, hence have a non-vanishing Poynting-Vector.
snarkysparky:
Because in the limit as F -> 0 a transformer cannot transfer any power.
Don't know anything about the quantum mechanics. But I can read basic equations.
Vtile:
--- Quote from: rstofer on August 20, 2021, 03:27:51 am ---Three people in history have understood Maxwell's Equations: Maxwell, Feynman and Einstein. The rest of us just think we know what is going on.
--- End quote ---
Make it four, add Heviside as the most referred form of Maxwell equations are infact Maxwell-Heviside equations.
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